Smoke,
Just because someone has seen this type of display before in Japan at the Kokufu Bonsai Exhibition or other shows does NOT mean that it is good, nor need to be copied! There are pleasing and some not so pleasing displays in Japan, and elsewhere too.
Although "beauty is in the eye of the beholder" certain design elements are basic and need to be considered. Personality and taste is very important and please remember that you cannot buy taste. You can, however, hire someone who has taste to display your bonsai. And, that is how it is done in many Japanese exhibitions. The owners hire or have "handlers" who arrange and display their trees. Of course, they charge the owner for the arrangement, table rental, container rental, accessory, mossing and all which goes into the display, including pick up and delivery and even preparing the owners bonsai for years before the actual exhibition. This is big business in Japan.
The beauty of each individual display is most important and is dependant on many things among the numerous include: eye movement, heights of individual bonsai and tables, accessories, species, season, theme and where in the exhibition the display is placed.
Bill